ios – 如何在导航栏Swift右侧添加自定义视图？

概述我正在尝试在UINavigationBar的右侧添加自定义视图.我尝试的是以下内容,但视图没有显示出来！请帮助,提前谢谢！ let viewOnrightButton = UIView(frame: CGRect(x: 2, y: 2, width: 60, height: 22)) // viewOnrightButton.frame = CGRectMake(2, 2, 60, 22)vi 我正在尝试在UINavigationbar的右侧添加自定义视图.我尝试的是以下内容,但视图没有显示出来！请帮助,提前谢谢！

let vIEwOnrightbutton = UIVIEw(frame: CGRect(x: 2,y: 2,wIDth: 60,height: 22)) // vIEwOnrightbutton.frame = CGRectMake(2,2,60,22)vIEwOnrightbutton.layer.cornerRadius = 2vIEwOnrightbutton.backgroundcolor = UIcolor(red: 0.961,green: 0.827,blue: 0.239,Alpha: 1.00)lblNumbersOfBanana.frame = CGRectMake(2,1,vIEwOnrightbutton.frame.wIDth-20,20)lblNumbersOfBanana.text = "001"var bananaimgVIEw = UIImageVIEw(frame: CGRect(x: vIEwOnrightbutton.frame.wIDth-22,y: 0,wIDth: 20,height: 20)) //  bananaimgVIEw.frame = CGRectMake(vIEwOnrightbutton.frame.wIDth-22,20,20)bananaimgVIEw.image = UIImage(named: "banana")vIEwOnrightbutton.addSubvIEw(lblNumbersOfBanana)vIEwOnrightbutton.addSubvIEw(bananaimgVIEw)self.navigationItem.rightbarbuttonItem?.customVIEw = vIEwOnrightbutton

解决方法 //创建uivIEw并添加三个自定义按钮

func addRightbutton(){    let vIEwFN = UIVIEw(frame: CGRectMake(0,180,40))        vIEwFN.backgroundcolor = UIcolor.yellowcolor()    let button1 = UIbutton(frame: CGRectMake(0,8,40,20))    button1.setimage(UIImage(named: "notification"),forState: UIControlState.normal)    button1.setTitle("one",forState: .normal)    button1.addTarget(self,action: #selector(self.dIDTapOnRightbutton),forControlEvents: UIControlEvents.touchUpInsIDe)    let button2 = UIbutton(frame: CGRectMake(40,20))    button2.setimage(UIImage(named: "notification"),forState: UIControlState.normal)    button2.setTitle("tow",forState: .normal)    let button3 = UIbutton(frame: CGRectMake(80,20))     button3.setimage(UIImage(named: "notification"),forState: UIControlState.normal)    button3.setTitle("three",forState: .normal)    button3.addTarget(self,forControlEvents: UIControlEvents.touchUpInsIDe)    vIEwFN.addSubvIEw(button1)    vIEwFN.addSubvIEw(button2)    vIEwFN.addSubvIEw(button3)    let rightbarbutton = UIbarbuttonItem(customVIEw: vIEwFN)    self.navigationItem.rightbarbuttonItem = rightbarbutton}

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